1957 Plymouth Directory

The Forward Look

Forward Look was a design theme employed by Virgil Exner in styling the 1955 through 1961 Chrysler Corporation vehicles.

Chrysler vehicles were being fashioned by engineers instead of designers, and so were considered outmoded, unstylish designs. Exner fought to change this structuring, and got control over the design process, including the clay prototypes and the die models used to create production tooling.

Plymouth Belvedere convertibles were only produced from 1957 to 1959

Video of the Plymouth Arrival

What's the Power-Pak Package?

Original Power-Pak parts are indicated by an "A" at the end of the part number.

1. Special Distributor - Auto-Lite p/n IBP4003A
2. Special Four-barrel Carter WCFB Carburetor 385 CFM - Tag# 2530SA
3. Special intake manifold - Four-barrel Casting # 1619826
4. Larger air cleaner with a paper filter for the first time, previously were oil bath
5. Dual Exhaust for less back pressure
6. 235 HP (More horsepower)

Welcome to our 1957 Plymouth Belvedere Convertible Website

June 1, 2010 we purchased a yellow 1957 Plymouth Belvedere Convertible on eBay from Salem Indiana and waited for it to arrive by truck.

Photos on eBay of the Plymouth >>>

This is similar to the car I had in High School in 1962

black 57 Plymouth convertible

I purchased the Belvedere in 1962, the year I graduated from Tennyson High School in Hayward, CA. I sold it in 1966 when I got married. We used to go to Santa Cruz on the weekends and go cruising with the top down and surfing...

More information go here >>>

We have had a lot of fun with this car since we bought it and have won several trophies including first runner up for MoPar Day at Hot August Nights 2012. (see ribbon at top)

Specifications

1957 Plymouth Power-Pak Engine P-31: 301 cu in V8 [4.9 Liter]

Taxable HP 48.9
Gross Brake Horsepower 235 @ 4,400 rpm (stock horsepower)
Torque 285 @ 2,800 rpm>
Bore x Stroke 3.29 / 32 x 3.125
Compression 8.5:1
Compression pressure 125-165 psi
Max variation between cylinders 15 psi
Cylinder numbering from front of engine left, 1-3-5-7; right, 2-4-6-8
Firing order 1-8-4-3-6-5-7-2
Connecting rod bearings Replaceable steel backed babbit; desired clearance, .0005 to .0015 inch
Main bearings Replaceable steel backed babbit; 5 on V8; .0005 to .0015 inch clearance desired; 2.5 inch diameter (nominal)
Ignition timing 10° BTDC
Breaker point gap .015 to .018 in.
Spark plug gap .035 in.
Spark plug size AR42
Carburetor Carter WCFB four-barrel 385 CFM
Valve Lifter Type Poly Solid Lifters
Cam 256/.435” (208@.050”) 112LC H.P. Poly Solid Cam
(90-100lbs. seat pressure/260-270lbs. open valve spring pressure)


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